Hnb Access Network Elements; Home Nodeb - Cisco ASR 5000 Series 3G Home NodeB Administration Manual

HNB Gateway in Wireless Network
The other approach is to connect the Femtocell to an IMS Network to provide CS services to subscribers when on the
Femtocell and deploy a new network element generically called a Convergence Server to provide service continuity and
mobility over standard interfaces at the MSC layer (e.g GSM-MAP, IS-41). These two approaches are clearly different
in how CS based services and mobility are achieved.
In accordance with 3GPP standard, the HNB-GW provides following functions and procedures in UMTS core network:
 HNB Registration/De-registration Function
 UE Registration/De-registration Function for HNB
 IuH User-plane Management Functions
 IuH User-plan Transport Bearer Handling
 Iu Link Management Functions
Important:
representative for more information on supported features.

HNB Access Network Elements

This section provides the brief description and functionality of various network elements involved in the UMTS Femto
access network. The HNB access network includes the following functional entities:


Home NodeB


Security Gateway (SeGW)

HNB Gateway (HNB-GW)

HNB Management System (HMS)
Home NodeB
A Home NodeB (HNB) is the a customer premise equipment that offers Uu interface to UE and IuH over IPSec tunnel
to HNB-GW for accessing UMTS Core Network (PS or CS) in Femtocell access network.
It also provides the support to HNB registration and UE registration over IuH with HNB-GW. Apart from these
functions HNB also supports some RNC like functions as given below:
 RAB management functions
 Radio Resource Management functions
 Iu Signalling Link management
 GTP-U Tunnels management
 Buffer Management
 Iu U-plane frame protocol initialization
 Mobility management functions
 Security Functions
 Service and Network Access functions
 Paging co-ordination functions
 UE Registration for HNB
OL-25069-03
Some of the features may not be available in this release. Kindly contact your local Cisco
Cisco ASR 5000 Series 3G Home NodeB Gateway Administration Guide ▄
Product Description ▀
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